What is the main purpose of the 'route' command in Linux?

The main purpose of the 'route' command in Linux is to modify network routing tables. This command allows users to view and manipulate the kernel's routing tables, which are essential for directing network traffic. Using the 'route' command, administrators can add, delete, or change the network paths that data packets follow when sending communication to different hosts on the network.

This command is vital for managing how data moves across networks, as it provides the capability to configure static routes or to adjust existing routes dynamically based on network requirements. Furthermore, by modifying the routing tables, system administrators can optimize network performance, control traffic flow, and enhance security measures.

The other choices pertain to different network management functionalities. Displaying network interface details is typically handled by commands like 'ifconfig' or 'ip addr'. The action of pinging remote hosts is performed by the 'ping' command, which is specifically designed to test the reachability of a host on an Internet Protocol (IP) network. Finally, displaying current connections is usually accomplished using commands like 'netstat' or 'ss', which provide insight into active connections, listening ports, and established connections.